From 7e52a004999d009e3118088055e99aa35958a7fc Mon Sep 17 00:00:00 2001
From: Ben Adams <thundercat@illyriad.co.uk>
Date: Sat, 26 Sep 2015 14:34:49 +0100
Subject: [PATCH] Start log scope only if logging is enabled

---
 src/Microsoft.AspNet.Hosting/Internal/HostingEngine.cs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/Microsoft.AspNet.Hosting/Internal/HostingEngine.cs b/src/Microsoft.AspNet.Hosting/Internal/HostingEngine.cs
index 97bdc06e23..2f88460264 100644
--- a/src/Microsoft.AspNet.Hosting/Internal/HostingEngine.cs
+++ b/src/Microsoft.AspNet.Hosting/Internal/HostingEngine.cs
@@ -104,7 +104,9 @@ namespace Microsoft.AspNet.Hosting.Internal
 
                     try
                     {
-                        using (logger.BeginScope("Request Id: {RequestId}", requestIdentifier))
+                        using (logger.IsEnabled(LogLevel.Critical) 
+                            ? logger.BeginScope("Request Id: {RequestId}", requestIdentifier) 
+                            : null)
                         {
                             contextAccessor.HttpContext = httpContext;
                             await application(httpContext);